As stated in the third sentence of my first reply. It is ruined.no good, bad leather, worthless. no good for caca. land fill material,trash, not fixable,use another piece of leather.
Can't get much clearer then that. You have ruined the leather ,it can not be used for this project. Get another piece and start over,
When you do start over,case you leather with just cold tap water. soak it till it quite bubbling if you wish. put it in a bag and let it case(suck in the water that you put on the leather to a cellular level) and then go from there. If you have any more questions please ask but as for the leather